30032813 has 2 divisors, whose sum is σ = 30032814. Its totient is φ = 30032812.

The previous prime is 30032771. The next prime is 30032837. The reversal of 30032813 is 31823003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29789764 + 243049 = 5458^2 + 493^2 .

It is a cyclic number.

It is not a de Polignac number, because 30032813 - 2¹⁸ = 29770669 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30032113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15016406 + 15016407.

It is an arithmetic number, because the mean of its divisors is an integer number (15016407).

Almost surely, 2^30032813 is an apocalyptic number.

It is an amenable number.

30032813 is a deficient number, since it is larger than the sum of its proper divisors (1).

30032813 is an equidigital number, since it uses as much as digits as its factorization.

30032813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30032813 is about 5480.2201598111. The cubic root of 30032813 is about 310.8364955622.

Adding to 30032813 its reverse (31823003), we get a palindrome (61855816).

The spelling of 30032813 in words is "thirty million, thirty-two thousand, eight hundred thirteen".